摘要
采用铬天青S-分光光度法测定了木耳中非法添加剂磷化铝含量。研究表明：pH为5．97时，CAS、CTMAB与Al。形成的蓝色络合物，其最大吸收峰位于584nm处，铝的浓度在0～60mg／mL范围内，回归方程为y=1．1129x＋0．4516，r=-0．9930，摩尔吸光系数为3．0×10^4 L／（mol·cm）。检出限为0．005mg／mL，平均回收率为100．65％，RSD为2．23％。
Determination of illegal additive Aluminium phosphide in edible fungus by Chromium azure S Spetrophotometry was studied in this paper. Aluminium reacts with CAS and CTMAB to form a stable blue complex （pH5.97）. The complex has a maximum absorption wavelength at 584 nm. Concentration of aluminium was in the range of 0 mg/mL-60 mg/mL, the regression equation being y = 1.112 9x ＋0.451 6, the correlation coefficients was 0.993 0, and the apparent molar absorptivity was 3.0 × 104 L/（mol·cm）. The detection limit was 0.005 mg/mL,The average recovery was 100.65 %,with RSD of 2.23 %.
出处
《食品研究与开发》
CAS
北大核心
2014年第2期81-83,共3页
Food Research and Development
关键词
木耳
磷化铝
铬天青S
分光光度法
fungus
aluminum phosphide
chromium azure S
spetrophotometry
